Glen Head sits on folded ground above Long Island Sound, where the lanes bend around fieldstone walls and the hedges have had a long time to learn their shape. Lewis & Valentine Landscaping keeps lawns on those streets — mowing, trimming and edging, and the cleanups that bracket the growing year. The first cut of May is the one worth being there for: the air off the water still cool, the mower lines coming up straight across grass that spent all winter waiting. Summer is a matter of returning, week after week, so nobody ever sees the lawn get ahead of itself. Then October, when the leaves come off the old maples and get cleared from the turf and the bed lines before frost presses them flat. Good work here is quiet — a yard that simply looks right every time you pull in.